<?php

/**
 * JPGraph v4.0.3
 */

namespace lemon\JpGraph\Graph;

use lemon\JpGraph\Image;

/**
 * File:		JPGRAPH_CANVAS.PHP
 * // Description: Canvas drawing extension for JpGraph
 * // Created:	 2001-01-08
 * // Ver:		 $Id: jpgraph_canvas.php 1923 2010-01-11 13:48:49Z ljp $
 * //
 * // Copyright (c) Asial Corporation. All rights reserved.
 */

/**
 * @class CanvasGraph
 * // Description: Creates a simple canvas graph which
 * // might be used together with the basic Image drawing
 * // primitives. Useful to auickoly produce some arbitrary
 * // graphic which benefits from all the functionality in the
 * // graph liek caching for example.
 */
class CanvasGraph extends Graph
{
	/**
	 * CONSTRUCTOR.
	 *
	 * @param mixed $aWidth
	 * @param mixed $aHeight
	 * @param mixed $aCachedName
	 * @param mixed $timeout
	 * @param mixed $inline
	 */
	public function __construct($aWidth = 300, $aHeight = 200, $aCachedName = '', $timeout = 0, $inline = 1)
	{
		parent::__construct($aWidth, $aHeight, $aCachedName, $timeout, $inline);
	}

	/**
	 * PUBLIC METHODS.
	 */
	public function InitFrame()
	{
		$this->StrokePlotArea();
	}

	// Method description
	public function Stroke($aStrokeFileName = '')
	{
		if ($this->texts != null) {
			for ($i = 0; $i < safe_count($this->texts); ++$i) {
				$this->texts[$i]->Stroke($this->img);
			}
		}
		if ($this->iTables !== null) {
			for ($i = 0; $i < safe_count($this->iTables); ++$i) {
				$this->iTables[$i]->Stroke($this->img);
			}
		}
		$this->StrokeTitles();

		// If the filename is the predefined value = '_csim_special_'
		// we assume that the call to stroke only needs to do enough
		// to correctly generate the CSIM maps.
		// We use this variable to skip things we don't strictly need
		// to do to generate the image map to improve performance
		// a best we can. Therefor you will see a lot of tests !$_csim in the
		// code below.
		$_csim = ($aStrokeFileName === _CSIM_SPECIALFILE);

		// We need to know if we have stroked the plot in the
		// GetCSIMareas. Otherwise the CSIM hasn't been generated
		// and in the case of GetCSIM called before stroke to generate
		// CSIM without storing an image to disk GetCSIM must call Stroke.
		$this->iHasStroked = true;

		if (!$_csim) {
			// Should we do any final image transformation
			if ($this->iImgTrans) {
				$tform		  = new Image\ImgTrans($this->img->img);
				$this->img->img = $tform->Skew3D(
					$this->iImgTransHorizon,
					$this->iImgTransSkewDist,
					$this->iImgTransDirection,
					$this->iImgTransHighQ,
					$this->iImgTransMinSize,
					$this->iImgTransFillColor,
					$this->iImgTransBorder
				);
			}

			// If the filename is given as the special _IMG_HANDLER
			// then the image handler is returned and the image is NOT
			// streamed back
			if ($aStrokeFileName == _IMG_HANDLER) {
				return $this->img->img;
			}
			// Finally stream the generated picture
			$this->cache->PutAndStream($this->img, $this->cache_name, $this->inline, $aStrokeFileName);

			return true;
		}
	}
} // @class

/* EOF */
